On 8/8/08, S K <nospamnoham@gmail.com> wrote:>> My machine has acpi-cpufreq module, but when I try to load it, I get:> FATAL: Error inserting acpi_cpufreq> (/lib/modules/2.6.25.11-97.fc9.i686/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko):> No such device>> Btw, yes, cpu freq scaling works in Windows XP. What should I look for> in Windows?>> I build my own system, so I have gone through my system BIOS several> times and don't remember anything related to freq scaling. But I will> check again.

There is a "PPM mode" option which has possible values:Native - Native mode is for fully support ACPI OS (ex. Win XP, Vista)SMM - SMM mode is for legacy OS (ex. Win 2k)

Setting it to SMM didn't help. Gave the same error for acpi_cpufreq.

Btw, you were right about FC trying all the module, but it apparentlytried only speedstep modules for some reason. It's clear from mydmesg.txt that all the speedstep modules are attempted.

Forgot one obvious thing when I ran dmesg -- forgot to run it aftertrying modprobe acpi_cpufreq.This is what I get when I do that: